Emerson Dissolved Oxygen Sensor Model 430 DO Owner's manual

Category
Oxygen Equipment
Type
Owner's manual

This manual is also suitable for

Model 430 DO
Dissolved Oxygen Sensor
Instruction Manual
PN 51-430/rev.A
May 1996
CAUTION
SENSOR/PROCESS
APPLICA
TION COMPATIBILITY
The wetted sensor materials may not be
compatible with process composition
and operating conditions. Application
compatibility is entirely the responsibili-
ty of the user.
DANGER
HAZARDOUS AREA INSTALLATION
Installations near flammable liquids or in hazardous
area locations must be carefully evaluated by qual-
ified on site safety personnel. This sensor is not
Intrinsically Safe or Explosion Proof.
To secure and maintain an intrinsically safe instal-
lation, the certified safety barrier, transmitter, and
sensor combination must be used. The installa-
tion system must comply with the governing
approval agency (FM, CSA or BASEEFA/CEN-
ELEC) hazardous area classification require-
ments. Consult your analyzer/transmitter instruc-
tion manual for details.
Proper installation, operation and servicing of this
sensor in a Hazardous Area Installation is entirely
the responsibility of the user.
ESSENTIAL INSTRUCTIONS
READ THIS PAGE BEFORE PROCEEDING!
Rosemount Analytical designs, manufactures, and tests its products to
meet many national and international standards. Because these instru-
ments are sophisticated technical products, you must properly install, use,
and maintain them to ensure they continue to operate within their normal
specifications. The following instructions must be adhered to and integrated
into your safety program when installing, using, and maintaining Rosemount
Analytical products. Failure to follow the proper instructions may cause any
one of the following situations to occur: Loss of life; personal injury; proper-
ty damage; damage to this instrument; and warranty invalidation.
Read all instructions prior to installing, operating, and servicing the prod-
uct. If this Instruction Manual is not the correct manual, telephone 1-800-
654-7768 and the requested manual will be provided. Save this
Instruction Manual for future reference.
If you do not understand any of the instructions, contact your Rosemount
representative for clarification.
Follow all warnings, cautions, and instructions marked on and supplied
with the product.
Inform and educate your personnel in the proper installation, operation,
and maintenance of the product.
Install your equipment as specified in the Installation Instructions of the
appropriate Instruction Manual and per applicable local and national
codes. Connect all products to the proper electrical and pressure sources.
To ensure proper performance, use qualified personnel to install, operate,
update, program, and maintain the product.
When replacement parts are required, ensure that qualified people use
replacement parts specified by Rosemount. Unauthorized parts and pro-
cedures can affect the product’s performance and place the safe opera-
tion of your process at risk. Look alike substitutions may result in fire, elec-
trical hazards, or improper operation.
Ensure that all equipment doors are closed and protective covers are in
place, except when maintenance is being performed by qualified persons,
to prevent electrical shock and personal injury.
Emerson Process Management
Liquid Division
2400 Barranca Parkway
Irvine, CA 92606 USA
Tel: (949) 757-8500
Fax: (949) 474-7250
http://www.raihome.com
© Rosemount Analytical Inc. 2003
About This Document
This manual contains instructions for installation and operation of the Model 430 Dissolved Oxygen
Sensor. The following list provides notes concerning all revisions of this document.
Rev. Level Date Notes
A 5/96 This is the initial release of the product manual. The manual has been refor-
matted to reflect the Emerson documentation style and updated to reflect any
changes in the product offering.
MODEL 430 DO TABLE OF CONTENTS
MODEL 430
DISSOLVED OXYGEN
TABLE OF CONTENTS
Section Title Page
1.0 DESCRIPTION AND SPECIFICATIONS................................................................. 1
1.0 Features and Applications ...................................................................................... 1
1.2 Operation ................................................................................................................ 1
1.3 Available Models...................................................................................................... 2
1.4 Specifications........................................................................................................... 2
1.5 Ordering Information ............................................................................................... 4
2.0 INSTALLATION ....................................................................................................... 5
2.1 General.................................................................................................................... 5
2.2 Unpacking and Inspection ...................................................................................... 5
2.3 Mechanical Installation ........................................................................................... 5
2.4 Electrical Installation................................................................................................ 5
3.0 MAINTENANCE ...................................................................................................... 9
3.1 General.................................................................................................................... 9
3.2 Recharging the Sensor............................................................................................ 9
4.0 TROUBLESHOOTING............................................................................................. 10
4.1 General.................................................................................................................... 10
4.2 Troubleshooting ....................................................................................................... 10
4.3 Bench Testing .......................................................................................................... 10
5.0 PARTS LIST ........................................................................................................... 11
5.1 General.................................................................................................................... 11
6.0 RETURN OF MATERIAL ......................................................................................... 15
6.1 General.................................................................................................................... 15
6.2 Warranty Repair....................................................................................................... 15
6.3 Non Warranty Repair ............................................................................................... 15
i
TABLE OF CONTENTS CONTINUED
LIST OF FIGURES
Number Title Page
1-1 Flow Through Senson Assemblies ......................................................................... 2
1-2 Optional Mounting Bracket ..................................................................................... 3
2-1 Code 01 and 02 Flow Through Installation ........................................................... 6
2-2 Sensor Dimensions ................................................................................................ 7
5-1 Model 430 (Codes 01 and 02) Dissolved Oxygen Sensor ..................................... 11
5-2 Model 430 Sensor Assembly .................................................................................. 12
5-3 Model 430 (Code 03) Dissolved Oxygen Sensor ................................................... 13
5-4 Model 430 (Code 04) Dissolved Oxygen Sensor.................................................... 14
LIST OF TABLES
Number Title Page
2-1 Electrical Connections ........................................................................................... 5
ii
MODEL 430 DO TABLE OF CONTENTS
1
LARGE ELECTROLYTE RESERVOIR allows up to twelve months and often longer
between refills.
OPTIONAL MOUNTING BRACKET allows easy removal of the sensor from an aeration
basin without the use of tools.
MODULAR PRESSURE COMPENSATOR AND MEMBRANE RETAINER simplify recharg-
ing and membrane replacement.
MEMBRANE RETAINER REPLACEMENT AND RECHARGING require no tools.
MODEL 430 DO SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
SECTION 1.0
GENERAL DESCRIPTION AND SPECIFICATIONS
1.1 FEATURES AND APPLICATIONS
The Rosemount Analytical
®
Model 430 Dissolved
Oxygen Sensor, used with the Model 1181 Dissolved
Oxygen Transmitter, measures oxygen levels in a vari-
ety of applications. The most widely used application is
the secondary phase of the waste treatment process
where a critical dissolved oxygen level must be main-
tained for the digestive process to occur. Other appli-
cations include water quality monitoring in natural bod-
ies of water such as rivers and streams, or any location
where adequate oxygen content is important to sustain
aquatic life.
The Model 430 Dissolved Oxygen Sensor is construct-
ed of PVC with an oxygen permeable Teflon
1
mem-
brane .
1.2 OPERATION
As oxygen passes through the Teflon membrane an
oxygen dependent electrochemical reaction takes
place between the gold cathode and silver anode in the
presence of the electrolyte. The resultant current flow
between these elements is proportional to the quantity
of oxygen which has entered the sensor.
Temperature and pressure compensation are both
standard features on the Model 430. Temperature com-
pensation is necessary for two reasons: First, the solu-
bility of oxygen in water decreases with an increase in
temperature; secondly, the permeability of the Teflon
membrane and the oxygen diffusion rate increase as
the temperature increases. For these reasons, it is
important for a dissolved oxygen measurement to be
accompanied by an accurate temperature measure-
ment. Temperature compensation is accomplished by
means of a thermistor located in the sensor housing,
and its associated circuitry in the analyzer.
Pressure compensation is a mechanical rather than
electronic correction. It is important for the tension on
the Teflon membrane to remain constant at all times,
even with sample pressure changes. Fluctuations in
membrane tension affect its diffusion characteristics.
By means of a pressure compensator the pressure on
the sample side of the compensator membrane is
transmitted to the electrolyte reservoir so the pressure
on both sides of the membrane remains equal. In this
manner, sample pressure changes do not affect the dif-
fusion rate of oxygen through the membrane.
The Teflon membrane is held in place by a retainer. A
water-tight seal is made with an O-ring between the
membrane and sensor reservoir. Membrane replace-
ment is rarely required, but in those situations when it
is necessary, the procedure can be performed quickly
and easily.
Since oxygen diffuses through the Teflon membrane at
a faster rate than through the sample, it is necessary to
continuously maintain a fresh sample in front of the
membrane. A stream velocity of approximately 1.5 feet
per second (0.5 m/s) is required to ensure that a fresh
sample is in contact with the membrane at all times.
1
Reg. U.S. Pat. Office for du Pont’s fluorocarbon resins.
2
MODEL 430 DO SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
1.3 AVAILABLE MODELS
The Model 430-01 and -02 Sensor is a flow through
assembly. The sensor is supplied in a 1-1/2 inch PVC
tee for installation into a process line.
The Model 430-03 Submersible Sensor is for use in
those applications where the required flow velocity can
be maintained without the use of an agitator. When the
measurement is being made in a stagnant pond or
other media where the minimum flow rate of 1.5 FPS
cannot be obtained, the Model 430-04 must be select-
ed. This model is designed for submersible use and is
provided with its own agitator to ensure adequate flow
velocity at the membrane.
The Models 430-03 and 04 may be provided with an
optional mounting bracket assembly. This bracket is
constructed of light weight aluminum and can be
adjusted to satisfy virtually any aeration basin mount-
ing requirement. Once installed, the probe can be
removed without the use of tools. A single locking pin
holds the assembly rigidly in place but allows it to be
easily removed for inspection or cleaning.
1.4 SPECIFICATIONS
Process Connection:
430-00/01 1-1/2 inch socket fitting
Wetted Materials: HOUSING - PVC
MEMBRANE - Teflon
PRESSURE COMPENSATOR - Neoprene
Temperature Compensation:
0 to 50°C (32 to 122°F) Automatic
Sample Pressure: 0-50 psig (345 kPa abs)
Submersible to 200 ft. (61 m).
Agitator Power Requirement: Model 430-04 only)
115 Vac, ±10 60 Hz (0.2 amp)
Cable Length (standard):
6.1 meters (20 ft) on sensor and agitator
Maximum Cable Length:
305 meters (1000 ft)
Operating Time Between Electrolyte Recharge:
Approximately 12 months or longer, depending upon
application
Sample Flow Requirements for Models 430-01-02-03:
1.5 feet per seconds (0.5 m/s)
FIGURE 1-1 Flow Through Assemblies
DWG. NO. REV.
40043019 A
MILLIMETER
INCH
3
MODEL 430 DO SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
FIGURE 1-2 Optional Mounting Bracket
DWG. NO. REV.
40043018 B
MILLIMETER
INCH
4
MODEL 430 DO SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
1.5 ORDERING INFORMATION. The Model 430 Dissolved Oxygen Sensor: Includes PVC body with integral,
oxygen-permeable membrane of Teflon
1
. Temperature and pressure compensators included. Compatible with
Model1181DO.
MODEL
430 DO DISSOLVED OXYGEN SENSOR
CODE MOUNTING HARDWARE
01 1-1/2” PVC flow cell, 90° flow
02 1-1/2” PVC flow cell, 180° flow
03 PVC union with 3/4” FNPT for submersion service
04 PVC union with 1” FNPT and agitator with 20 foot cable for submersion. Agitator motor requires
115 VAC power only.
499 DO 01 16 EXAMPLE
CODE MOUNTING HARDWARE
11 Stainless steel tag (specify marking)
14 Handrail mounting bracket (P/N 1000857) for use with junction box (see Code 17 below).
15 Handrail mounting bracket (P/N 1000856) for use with Model 803
17 Weatherproof, NEMA 4X junction box (P/N 22719-02)
NOTES:
Recommended interconnecting cable from sensor to transmitter is Belden 8434 or equivalent, available from Rosemount Analytical as P/N
9200074. Specify length.
1
Reg. U.S. Pat. Office for du Pont's fluorocarbon resins.
5
MODEL 430 DO SECTION 2.0
INSTALLATION
SECTION 2.0
INSTALLATION
2.1 GENERAL. This section provides instructions for
the Model 430 Dissolved Oxygen Sensor.
2.2 UNPACKING AND INSPECTION. Inspect the ship-
ping container and remove the sensor. Carefully check
the sensor and its associated hardware for any dam-
age. Report any damage to the carrier immediately.
2.3 MECHANICAL INSTALLATION. The sensor
comes in four different configurations. Follow the
instruction for the configuration being installed. See
Figure 2-2 for dimensions. Figure 1-2 illustrates
optional bracket assembly for sensor installation in
tanks or ponds.
2.4 Electrical Installation. Connect the sensor to the
transmitter as shown in Table 2-1.
2.3.1 Codes 01 and 02 (see Figure 2-1). These config-
urations are for flow through measurements. Install the
tee using 1-1/2 inch PVC. For the angle flow (Code
01), make sure the flow enters at the opening opposite
the sensor, so that the sample flows directly into the
membrane.
2.3.2 Codes 03 and 04 (see Figure 5-3 and Figure 5-
4). These configurations are for submersion into a tank
or pond. The Code 03 configuration requires a flow
past the sensor of 1.5 feet per second (0.5 m/s). The
Code 04 configuration is for stagnant or still tanks and
ponds.
Sensor Lead
Model 1181DO
1. (Red) silver anode TB2-4
2. Shield TB2-2
3. (White) T.C. element TB2-1
4. (Green) T.C. element TB2-3
5. (Black) gold cathode TB2-3
TABLE 2-1 Electrode Connections
6
MODEL 430 DO SECTION 2.0
INSTALLATION
FIGURE 2-1. Codes and 01 and 02 Flow Through Installation
DWG. NO. REV.
40043001 G
MILLIMETER
INCH
7
MODEL 430 DO SECTION 2.0
INSTALLATION
FIGURE 2-2. Code 03 Sensor Dimensions
DWG. NO. REV.
40043002 D
MILLIMETER
INCH
9
MODEL 430 DO SECTION 3.0
MAINTENANCE
SECTION 3.0
MAINTENANCE
3.1 GENERAL. Sensor maintenance consists of keep-
ing the sensor clean, recharging the sensor and
replacing the membrane. The sensor should be
cleaned with clean water and a soft cloth. Make sure
the membrane area is kept clean and free of any
accumulation of dirt, algae, fungus, hair, etc.
3.2 RECHARGING THE SENSOR. A recharge kit
(Rosemount analytical P/N 2002473) is required to
service the sensor.
Recharge the sensor as follows (see Figure 5-2):
1. Remove the sensor from its mounting.
2. Loosen the vent screw approximately 1-1/2 turns.
DO NOT REMOVE IT
3. Unscrew and remove the reservoir retainer from
the base. Use a strap wrench if the retainer is to
tight to remove by hand.
4. Pull the reservoir housing assembly from the base
WITHOUT rotating it. Hold sensor in a base-up
position to keep electrolyte from spilling out. If the
reservoir housing assembly is locked onto the
base, use a screwdriver at the parting lines to dis-
lodge the base from the reservoir housing assem-
bly. Do not damage the mating surfaces with the
screwdriver while separating the base from the
reservoir housing assembly.
CAUTION
The electrolyte (KCI) is a corrosive liquid
which could damage some materials and
may irritate the skin or eyes. If the electrolyte
comes in contact with the skin or eyes, wash
immediately with clean water.
5. Discard the O-ring, electrolyte, and reservoir
housing assembly.
6. Prepare the electrolyte solution as follows:
a. Pour electrolyte crystals into a beaker containing
100 milliliters of distilled or demineralizer water.
Stir until crystals are dissolved.
b. If it is desired to forego the stabilization period of
two hours, a dilution of the electrolyte may be
done by adding NaOH or KOH to adjust the pH of
the solution to 12 or greater.
c. The unused electrolyte solution can be saved for
future use. The pH should be rechecked prior to
use if the solution has been stored.
7. Fill the new reservoir housing assembly with elec-
trolyte to the hole in the inner wall of the reservoir
(approximately 3/4 full). Tap the reservoir lightly to
remove any air bubbles.
8. Rinse all parts of the base in distilled or deionized
water. To remove silver chloride from the silver
anode, use a fine grit sandpaper or a pencil eras-
er and rub lightly until the coating is removed.
Rinse the silver anode in distilled water until all
traces of grit are removed.
9. Lightly lubricate the O-rings with O-ring lube and
install the O-ring in the groove of the base.
10. Hold the reservoir housing assembly in an upright
position and carefully slide the base into the reser-
voir housing assembly, making sure the tip of the
post enters the membrane retainer. Some elec-
trolyte should seep out through the vent screw
while the reservoir housing assembly is being
pushed onto the base. Do not grip the pressure
compensator while pushing the reservoir housing
assembly onto the base.
CAUTION
In the following step, do not push the reser-
voir housing assembly onto the base too fast.
The orifices in the base vent screw are very
small and a quick surge of pressure could
damage the membrane. A stream of elec-
trolyte solution could be forced through the
vent screw while the reservoir housing
assembly is being installed.
11. Push the reservoir housing assembly onto the
base until the threads of the base and the reser-
voir retainer can be engaged. After the threads are
engaged, turn the reservoir retainer until it is fin-
ger-tight. Caution, over finger-tight may damage
membrane or base post.
NOTE
Do not touch or apply pressure to the mem-
brane.
12. Tighten the vent screw. Rinse the sensor with
clean water and dry with a lint-free cloth or towel.
13. The sensor is now ready for use.
10
4.1 GENERAL. This section contains troubleshooting
data for the Model 430 Sensor Assembly.
4.2 TROUBLESHOOTING THE MODEL 430
DISSOLVED OXYGEN SENSOR. The majority of
problems encountered in DO systems are because the
sensor is either improperly maintained or has an inter-
nal leakage causing improper temperature compen-
sator resistance and high impedance current paths
between elements of the sensor.
Disassemble the sensor completely by unscrewing the
reservoir retainer and pulling the reservoir housing
assembly straight out (refer to Figure 5-2). The mem-
brane may have dried onto the gold cathode. Soak this
loose with water as scraping will damage the gold tip.
Clean all the parts with clean water and dry them.
Check for visible damage (i.e., cracks, deep cuts, bro-
ken silver wires). Perform the following checks with an
ohmmeter. Check T.C. resistance between the green
and white wires. It should be 100K ohms at 25°C or per
the Temperature/Resistance Chart. Check continuity
between the red wire and the silver anode, and
between the black wire and the gold cathode (be care-
ful not to scratch the gold). Perform a high meg check
between the following (100 meg ohms minimum):
Shield to Black or Red or Green. If everything checks
O.K., the sensor should function after a proper
recharge. If the silver anode appears oxidized, it may
be cleaned with wet or dry 400 sandpaper. Also brush
the gold tip two or three times with the 400 sandpaper
in one direction only. Follow the recharge directions in
Section 3.2.
4.3 BENCH TESTING. Soak the electrode for 24 hours
with polarizing voltage applied (instrument), then air
calibrate to check for a response.
CAUTION
Care should be taken not to damage the
membrane made of “Teflon”.
1. Low readings and inability to calibrate are
generally the result of a coated membrane
and usually can be restored to service by
cleaning the sensor. Clean a coated mem-
brane by gently wiping the membrane with a
soft cloth or tissue.
1
Reg. U.S. Pat. Office for du Pont’s fluorocarbon resins.
2. Readings offscale and inability to calibrate
are usually caused by a damaged mem-
brane. If this is the case, replace the mem-
brane.
3. To check the membrane made of “Teflon”,
connect the negative (—) lead of an ohm-
meter to the cathode (black) lead and
place water saturated with salt on the
membrane. Touch the positive (+) lead to
the water. The meter should read open
(100 megohms or more). If the meter indi-
cates a short (less than 100 megohms),
replace the membrane (refer to Section
3.2).
4. To check the resistance of the temperature
compensator, connect an ohmmeter to the
green and white leads of the sensor. The
resistance should be as indicated at the
temperature listed below: If the resistance
as specified above cannot be achieved,
replace the sensor (Figure 5-2).
Temperature Resistance Chart
5. To check for shorted sensor leads, meas-
ure the resistance between one tempera-
ture compensator wire (green or white) and
the cathode (black) lead and anode (red)
lead. The meter should indicate an open
circuit (100 megohms or more). Repeat the
measurement using the other temperature
compensator wire. If the sensor shows a
short circuit, the sensor is defective and
should be replaced.
MODEL 430 DO SECTION 4.0
TROUBLESHOOTING
SECTION 4.0
TROUBLESHOOTING
TEMPERATURE RESISTANCE (ohms)
0°C 371.40K
10°C 214.50K
20°C 128 00K
25°C 100.00K
30°C 78.00K
40°C 49.80K
50°C 32.36K
11
MODEL 430 DO SECTION 5.0
PARTS LISTS
SECTION 5.0
PARTS LISTS
5.1 GENERAL. This section contains the replacement parts lists and illustrations for the Model 430 Sensor Assembly.
Parts are keyed with an item number. Use the illustration to locate the item number for the part in question. Then refer
to the accompanying parts list for the part number, description and quantity needed. The Usage Code column, where
used, identifies parts used on more than one assembly. If there is no code letter, the item is used on all assemblies
in that parts list.
Figure & Part Usage
Item No. Number Description Code Qty.
5-1 A SENSOR ASSY, Model 430 Dissolved Oxygen, angle flow (Code 01 ) A RF
B SENSOR ASSY, Model 430 Dissolved Oxygen, straight flow (Code 02) B RF
3 2002566 Tee Assy, angle flow A
4 2002567 Tee Assy, straight flow B
5 Union, 1” NPT
7 9550090 O-ring (Buna-N, 2-029)
8 1001021 Sensor Assy (see Figure 5-2 for details)
9 3001197 Gasket
FIGURE 5-1. Model 430 (Codes 01 and 02) Dissolved Oxygen Sensor
DWG. NO. REV.
40045052 A
12
MODEL 430 DO SECTION 5.0
PARTS LISTS
Part Number Description Qty.
3002384 Base 1
9550116 O-ring (2-018)* 1
2002572 Reservoir housing assembly with membrane* 1
3002385 Retainer ,reservoir 1
9550133 O-ring (2-004) 1
3002382 Screw, vent 1
2002473 Recharge Kit 1
FIGURE 5-2. Model 430 Sensor Assembly
DWG. NO. REV.
40043016 A
13
MODEL 430 DO SECTION 5.0
PARTS LISTS
FIGURE 5-3. Model 430 (Code 03) Dissolved Oxygen Sensor
DWG. NO. REV.
40043015 A
Figure & Part
Item No. Number Description Qty.
5-3 SENSOR ASSY, Model 430 Dissolved Oxygen, submersion (Code 13) RF
2 9330020 Union, 3/4” NPT RF
3 3001617 Gasket 1
4 1001021 Sensor Assy (see Figure 5-2 for details) 1
14
MODEL 430 DO SECTION 5.0
PARTS LISTS
FIGURE 5-4. Model 430 (Code 04) Dissolved Oxygen Sensor
DWG. NO. REV.
40043017 A
Figure & Part
Item No. Number Description Qty.
5-4 SENSOR ASSY, Model 430 Dissolved Oxygen, with agitator (Code 04) 1
2 9380053 Pump, submersible Attaching parts for item 2: 1
3 Screw, SPH SS (#8-32x3/8) 4
4 Screw, SPH SS (#8-32x3/8) 2
5 3001150 Holder Assy 1
6 9320057 Union, 1” NPT 1
7 3001197 Gasket 1
8 1001021 Sensor assy (see Figure 5-2 for details) 1
15
Model 430 DO SECTION 6.0
RETURN OF MATERIAL
SECTION 6.0
RETURN OF MATERIAL
6.1 GENERAL. To expedite the repair and return of
instruments, proper communication between the cus-
tomer and the factory is important. A return material
authorization (RMA) number is required. Call (949)
757-8500. The "Return of Materials Request" form is
provided for you to copy and use in case the situation
arises. The accuracy and completeness of this form
will affect the processing time of your materials.
6.2 WARRANTY REPAIR. The following is the proce-
dure for returning instruments still under warranty.
1. Contact the factory for authorization.
2. Complete a copy of the “Return of Materials
Request” form as completely and accurately as
possible.
3. To verify warranty, supply the factory sales order
number or the original purchase order number. In
the case of individual parts or sub-assemblies, the
serial number on the mother unit must be sup-
plied.
4. Carefully package the materials and enclose your
“Letter of Transmittal” and the completed copy of
the “Return of Materials Request” form. If possi-
ble, pack the materials in the same manner as it
was received.
IMPORTANT
Please see second section of “Return of
Materials Request Form”. Compliance to
the OSHA requirements is mandatory for
the safety of all personnel. MSDS forms
and a certification that the instruments
have been disinfected or detoxified are
required.
5. Send the package prepaid to:
Rosemount Analytical Inc.
2400 Barranca Parkway
Irvine, CA 92606
Attn: Factory Repair
Mark the package: Returned for Repair RMA#
Model No. ____
6.3 NON WARRANTY REPAIR. Contact Factory For
Authorization
1. Contact the factory for authorization.
2. Fill out a copy of the “Return of Materials Request”
form as completely and accurately as possible.
3. Include a purchase order number and make sure
to include the name and telephone number of the
right individual to be contacted should additional
information be needed.
4. Do Steps 4 and 5 of Section 6.2.
NOTE
Consult the factory for additional infor-
mation regarding service or repair.
MODEL CFA 3000 RETURN OF MATERIAL
RETURN OF MATERIAL
GENERAL.
To expedite the repair and return of instruments, proper communication between the customer and the factory is
important. Before returning a product for repair, call 1-949-757-8500 for a Return Materials Authorization (RMA)
number.
WARRANTY REPAIR.
The following is the procedure for returning instruments still under warranty:
1. Call Emerson Process Management for authorization.
2. To verify warranty, supply the factory sales order number or the original purchase order number. In the case
of individual parts or sub-assemblies, the serial number on the unit must be supplied.
3. Carefully package the materials and enclose your “Letter of Transmittal” (see Warranty). If possible, pack the
materials in the same manner as they were received.
4. Send the package prepaid to:
Emerson Process Management
Liquid Division
2400 Barranca Parkway
Irvine, CA 92606
Attn: Factory Repair
RMA No. ____________
Mark the package: Returned for Repair
Model No. ____
NON-WARRANTY REPAIR.
The following is the procedure for returning for repair instruments that are no longer under warranty:
1. Call Emerson Process Management for authorization.
2. Supply the purchase order number, and make sure to provide the name and telephone number of the individ-
ual to be contacted should additional information be needed.
3. Do Steps 3 and 4 of the Warranty Repair section above.
NOTE
Consult the factory for additional information regarding service or repair.
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Emerson Dissolved Oxygen Sensor Model 430 DO Owner's manual

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